Ssl connect to traccar 4.3 missing device icons

Hope anybody can help me on this.
We have traccar 4.3 installed,
Server version: Apache/2.4.6 (CentOS)
Server built: Nov 5 2018 01:47:09
Letsencrypt certificates working.
Other sites hosted on the server is working 100% with ssl
The http//myserver.com redirect perfectly to https://myserver.com
The url https://myserver.com seems working fine except that no device icon is showing up on the map.
Apache server config file for myserver.com in /etc/httpd/conf.d

<IfModule mod_ssl.c>
          <VirtualHost _default_:80>
               ServerName myserver.com
               Redirect / https://myserver.com
         </VirtualHost>
         <VirtualHost *:443>
                ServerName myserver.com
                ServerAdmin support@myserver.com
                ProxyPass /api/socket ws://localhost:8082/api/socket
                ProxyPassReverse /api/socket ws://localhost:8082/api/socket
                ProxyPass / http://localhost:8082/
                ProxyPassReverse / http://localhost:8082/
                SSLEngine on
                Include /etc/letsencrypt/options-ssl-apache.conf
                SSLCertificateFile /etc/letsencrypt/live/myserver.com-0001/fullchain.pem
                SSLCertificateKeyFile /etc/letsencrypt/live/myserver.com-0001/privkey.pem
        </VirtualHost>
<IfModule mod_ssl.c>

I have tested with some other options with the same result.
Is there possibly a port on the firewall other from 443, 80 and 8082 that needs to be opened up ?
Thank you in advance for the help.

yes, you need to open port to communicate with the tracker. In my case, protocol h02 was port 5013.
5001/5002 are tcp/udp, check the protocol of your device, and open/forward the correct port.
Hope could help ;)

Thanx Dario,
Yes obvious, evything is working 100% except for the SSL connection to the web portal.

Have you checked browser console for errors?

Thanx Dario,
Yes obvious, everything is working 100% except for the SSL connection to the web portal.
But I fixed the problem.
Read all about the solution at htps://stackoverflow.com/questions/27358966/how-to-set-x-frame-options-on-iframe
Do : grep -ri "X-Frame-Options" /etc/httpd/conf.d and see which files sits with the "DENY" entry
I changed the file /etc/httpd/conf.d/ssl-params.conf
Line with Header always set X-Frame-Options DENY to Header always set X-Frame-Options SAMEORIGIN
Restart apache systemctl restart httpd
Do a cntrl F5 in crome on https://myserver.com and now all is well.

Anton, thanx for the obvious hint. Thats where I got the information to fix it.
Regards

I'm not sure what frame options have to do with SSL.

my device icon don't work too( device icon don't on map), in /etc/apache2/conf-available/ssl-params.conf change:
Header always set X-Frame-Options DENY
to
Header always set X-Frame-Options SAMEORIGIN
!!!